premix vs concoction

premix and concoction both are nouns.

Word	Noun	Adjective	Verb	Adverb
premix	Yes	No	No	No
concoction	Yes	No	No	No

As nouns, concoction is a hypernym of premix; that is, concoction is a word with a broader meaning than premix:

Other hypernyms of premix include intermixture, mixture.

premix (noun)	concoction (noun)
a commercially prepared mixture of dry ingredients	the act of creating something (a medicine or drink or soup etc.) by compounding or mixing a variety of components
	the invention of a scheme or story to suit some purpose
	an occurrence of an unusual mixture
	any foodstuff made by combining different ingredients